Manual

www.velodyne.com
46 - Digital Drive Series User’s Manual
APPENDIX C: IMPORTANT SUBWOOFER INFORMATION
Important Information Regarding your
Velodyne Digital Drive
™
Series Subwoofer
(DD-15 and DD-18 only) and THX
™
Ultra
2
THX Ultra2 Presets for the Velodyne Digital Drive Series:
To set the DD-15 and DD-18 to meet THX Ultra2 requirements, customize Preset 5 with the following parameters:
Low Pass Crossover Frequency: OFF
Low Pass Crossover Slope: 6 dB per octave
Subsonic Frequency: 15Hz
Subsonic Slope: 24 dB per octave
Phase: User adjustable
Polarity: User adjustable
Volume: 25
Contour Frequency: Default
Contour Level: 0.0
Theater/Music: 8
Night Mode Volume: Default in OFF position
THX Certied Pre-Amp/Receivers:
If you have a THX Certied Pre-Amp/Receiver, please connect the “(THX)” input on the back panel of the DD-15/
DD-18 to the ”Sub Out” connector of the THX Pre-Amp/Receiver. Also set the DD-15/DD-18 to the THX Preset
5, set the system response of the subwoofer as per the owner’s manual and then calibrate the THX Pre-Amp/
Receiver. This ensures that the bass management and calibrated levels are optimized for your system.
As this is a new THX Ultra
2
subwoofer, if your Pre-Amp/Receiver is THX Ultra
2
Certied, you may use the
Boundary Gain Control in the setup menu of the THX Ultra2 Pre-Amp/Receiver to compensate for any excessive
bass heard in the room if you are close to a wall.
THX Certied Ultra
2
:
Before any home theatre component can be THX Ultra
2
certied, it must pass a rigorous series of quality
and performance tests. Only then can a product feature the THX Ultra
2
logo, which is your guarantee that
the Home Theatre products you purchase will give you superb performance for many years to come. THX
Ultra
2
requirements cover every aspect of the performance of the product including power output, frequency
response, distortion, etc.